Re: get_pid fixes against 2.4.19pre7

Andrea Arcangeli (andrea@suse.de)
Fri, 26 Apr 2002 13:57:18 +0200


On Fri, Apr 26, 2002 at 12:53:47PM +0100, Russell King wrote:
> On Fri, Apr 26, 2002 at 01:44:09PM +0200, Andrea Arcangeli wrote:
> > + set_bit(p->pid, pid_bitmap);
> > + set_bit(p->pgrp, pid_bitmap);
> > + set_bit(p->tgid, pid_bitmap);
> > + set_bit(p->session, pid_bitmap);
>
> Since we're running under a lock, do we really need the guaranteed
> atomic (and therefore expensive) set_bit(), or would __set_bit()
> suffice?

__set_bit definitely suffices, thanks.

Andrea
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/